I had Aetna and they told me I did not have a weight loss benefit included with my plan, so they I was declined. I was lucky enough that my parents were willing to lend me the money so I could pay cash for the surgery and Aetna would cover my labs. Then Aetna canceled coverage for all individuals who reside in Mississippi and I ended up paying out of pocket for everything. It was expensive, but completely worth it.
I hope you get approved!